Lattice enthalpy - Study guides, Revision notes & Summaries
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aqa-a-level-chemistry-paper-1-inorganic-and-physical-chemistry-2023-predictions
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aqa-a-level-chemistry-paper-1-inorganic-and-physical-chemistry-2023-predictionsA-Level Chemistry 
AQA 
Paper 1 – Inorganic and Physical Chemistry 
Predicted Paper 2023 
Name …………………………………………………………………… 
Date ………………… 
2 hours allowed 
You should have access to the AQA insert (periodic table and data sheet) to 
help with answering the questions. 
Grade boundaries 
These are VERY rough guesses! Getting a 
C on this paper does not gu...
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AQA A LEVEL Chemistry Exam Questions with Correct Answers Merged
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Relative atomic mass - Ans .The average mass of an atom of an element, relative to 1/12th of 
the mass of an atom of Carbon-12 
 Relative molecular mass - Ans .Average mass of a molecule compared to 1/12th of the mass 
of a carbon-12 atom 
 The Avogradro constant - Ans .the number of particles in a mole 
 ideal gas equation - Ans .pV = nRT 
 empirical formula - Ans .the simplest whole number ratio of atoms of each element in a 
compound 
 percentage atom economy - Ans .(Mass of desired produ...
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CHEM191 Module 2 Exam Questions With 100% Correct Answers
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CHEM191 Module 2 Exam Questions With 
100% Correct Answers 
What is kinetic energy? - answerenergy of motion 
what is potential energy? - answerenergy of relative position 0 chemical bonds act as a store 
of potential energy 
what happens in terms of heat when a chemical reaction happens? - answerheat (q) is either 
absorbed or released by the reaction. 
what is enthalpy? - answerthe heat of reaction measured under conditions of constant 
pressure. 
how can the change in enthalpy be determined? ...
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AQA A LEVEL Chemistry QUESTIONS AND ANSWERS LATEST TOP SCORE.
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AQA A LEVEL Chemistry QUESTIONS AND ANSWERS LATEST TOP SCORE. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Relative atomic mass - ANS.The average mass of an atom of an element, relative to 1/12th of the mass of an atom of Carbon-12 
 
Relative molecular mass - ANS.Average mass of a molecule compared to 1/12th of the mass of a carbon-12 atom 
 
The Avogradro constant - ANS.the number of particles in a mole 
 
ideal gas equation - ANS.pV = nRT 
 
empirical formula - ANS.the simplest whole number ...
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CHEM191 Module 2 Exam Questions With 100% Correct Answers
- Exam (elaborations) • 9 pages • 2024
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CHEM191 Module 2 Exam Questions With 
100% Correct Answers 
What is kinetic energy? - answerenergy of motion 
what is potential energy? - answerenergy of relative position 0 chemical bonds act as a store 
of potential energy 
what happens in terms of heat when a chemical reaction happens? - answerheat (q) is either 
absorbed or released by the reaction. 
what is enthalpy? - answerthe heat of reaction measured under conditions of constant 
pressure. 
how can the change in enthalpy be determined? ...
And that's how you make extra money
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AQA CHEMISTRY A LEVEL WITH COMPLETE SOLUTIONS covalent bond - ANSWER-a shared pair of electrons between non-metal elements co-ordinate bond - ANSWER-a shared pair of electrons where both electrons are supplied by one atom repulsion in shapes of molecu
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AQA CHEMISTRY A LEVEL WITH COMPLETE SOLUTIONS 
 
 
covalent bond - ANSWER-a shared pair of electrons between non-metal elements 
 
co-ordinate bond - ANSWER-a shared pair of electrons where both electrons are supplied by one atom 
 
repulsion in shapes of molecules - ANSWER-Lone pair-lone pair > lone pair-bonding pair > bonding pair-bonding pair 
 
electronegativity - ANSWER-the power of an atom to attract the pair of electrons in a covalent bond 
 
hess' law - ANSWER-Total enthalpy chang...
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CHM 1045 Lab Exam with Verified Answers 2024
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1 lb = _______ kg - 0.454 
5 steps of creating a Lewis structure - 1. calculate total number of valence electrons available 
2. determine which will be the central atom 
3. arrange atoms symmetrically around the central atom 
4. place bonds/electrons around the atoms until the octet rule is satisfied for each atom, using double or 
triple bonds if necessary 
5. show any charges on the molecule by using brackets and writing the charge in the top right corner 
outside the brackets 
acid + base --&...
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CHEM191 Module 2 Exam Questions With 100% Correct Answers
- Exam (elaborations) • 9 pages • 2024
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CHEM191 Module 2 Exam Questions With 
100% Correct Answers 
What is kinetic energy? - answerenergy of motion 
what is potential energy? - answerenergy of relative position 0 chemical bonds act as a store 
of potential energy 
what happens in terms of heat when a chemical reaction happens? - answerheat (q) is either 
absorbed or released by the reaction. 
what is enthalpy? - answerthe heat of reaction measured under conditions of constant 
pressure. 
how can the change in enthalpy be determined? ...
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AQA CHEMISTRY A LEVEL WITH COMPLETE SOLUTIONS covalent bond - ANSWER-a shared pair of electrons between non-metal elements co-ordinate bond - ANSWER-a shared pair of electrons where both electrons are supplied by one atom repulsion in shapes of molecu
- Exam (elaborations) • 70 pages • 2024
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- £15.76
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AQA CHEMISTRY A LEVEL WITH COMPLETE SOLUTIONS 
 
 
covalent bond - ANSWER-a shared pair of electrons between non-metal elements 
 
co-ordinate bond - ANSWER-a shared pair of electrons where both electrons are supplied by one atom 
 
repulsion in shapes of molecules - ANSWER-Lone pair-lone pair > lone pair-bonding pair > bonding pair-bonding pair 
 
electronegativity - ANSWER-the power of an atom to attract the pair of electrons in a covalent bond 
 
hess' law - ANSWER-Total enthalpy chang...
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ALEV CHEM BORN-HABER CYCLE EXAM QUESTIONS WITH CORRECT ANSWERS 100% SOLVED
- Exam (elaborations) • 6 pages • 2024
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ALEV CHEM BORN-HABER 
CYCLE EXAM QUESTIONS WITH 
CORRECT ANSWERS 100% 
SOLVED 
Define the term electron affinity for chlorine The enthalpy change / heat energy change / ΔH 
for the formation of one mole of (chloride) 
ions from (chlorine) atoms 
A 5.00 g sample of potassium chloride was added to 50.0 g of water initially at 20.0 °C. The 
mixture was stirred and as the potassium chloride dissolved, the temperature of the 
solution decreased. Start a clock when KCl is added to water 
Record ...
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